SwipeLayout swipeLayout =  (SwipeLayout)findViewById(R.id.sample1);
//set show mode.
swipeLayout.setShowMode(SwipeLayout.ShowMode.LayDown);
//add drag edge.(If the BottomView has 'layout_gravity' attribute, this line is unnecessary)
swipeLayout.addDrag(SwipeLayout.DragEdge.Left, findViewById(R.id.bottom_wrapper));
swipeLayout.addSwipeListener(new SwipeLayout.SwipeListener() {
            @Override
            public void onClose(SwipeLayout layout) {
                //when the SurfaceView totally cover the BottomView.
            }
            @Override
            public void onUpdate(SwipeLayout layout, int leftOffset, int topOffset) {
               //you are swiping.
            }
            @Override
            public void onStartOpen(SwipeLayout layout) {
            }
            @Override
            public void onOpen(SwipeLayout layout) {
               //when the BottomView totally show.
            }
            @Override
            public void onStartClose(SwipeLayout layout) {
            }
            @Override
            public void onHandRelease(SwipeLayout layout, float xvel, float yvel) {
               //when user's hand released.
            }
        });